CALIBRATION OF THE RISING PLATE METER FOR MIXED PASTURES OF RYEGRASS (Lolium perenne L.) AND KIKUYO (Cenchrus clandestinus)

Cardenas, Javier Enrique Garces; Balocchi, Óscar; Calvache, Iván

doi:10.29393/chjaas36-20crjc30020

Cited by 5 publications

(3 citation statements)

References 26 publications

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“…Morrone) and 3% other species. Both HMs were calculated using the Rising Plate Meter (RPM F400, Farmworks Systems Ltd., Feilding, New Zealand), with the equation developed by Cárdenas et al (2020) for mixed pastures in Colombia. The equation used is as follows:…”

Section: Pasture and Grazing Managementmentioning

confidence: 99%

“…Herbage mass has been considered a key factor in determining the herbage DMI and animal performance in response to its direct effect on grazing behaviour and herbage chemical composition (Pérez-Prieto and Delagarde, 2012). Normally, herbage mass (HM) is expressed in kg DM ha -1 and refers to the plant material above ground level (0 or 5 cm above ground level; according to methodology) and maintains a close relationship with the pasture height (Cárdenas et al, 2020). The HM is dynamic and changes permanently in growth rate, senescence, defoliation frequency and carbohydrate concentration (Calvache et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

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Changes in the milk response to different herbage mass of dairy cattle in a tropical climate

Calvache,

Beltran,

Balocchi

et al. 2024

Chil. j. agric. res.

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The interaction between pasture and supplementation in dairy production systems constitutes a very important part of the efficiency of dairy. This study evaluated the effect of the herbage mass (HM) on the milk production and solid concentration. Twenty Holstein cows were distributed into two groups, 10 assigned 2200 kg DM ha -1 (low herbage mass, LHM) and 10 with 2800 kg DM ha -1 (medium herbage mass, MHM). Herbage mass was measured above 5 cm. The experiment lasted 8 wk. The variables evaluated were DM intake (DMI), milk production and composition (fat and protein concentration). Effects of treatments on variables were evaluated using a repeated measure analysis over time. The results showed nonsignificant differences in the pasture DMI between LHM and MHM for weeks 1, 2, 3 and 5 (P > 0.05). During week 4, pasture DMI was 3 kg greater for LHM than MHM (P < 0.05). The milk production did not differ between treatments per week, but the average was 2.4 kg greater for LHM compared to MHM (P < 0.05). In conclusion, changes in the pasture availability increased milk production at LHM, but not enough to cause changes in solids concentration. This clearly shows that, LHM can increase milk and solids production.

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Section: Pasture and Grazing Managementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Changes in the milk response to different herbage mass of dairy cattle in a tropical climate

Calvache,

Beltran,

Balocchi

et al. 2024

Chil. j. agric. res.

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“…Overall, the cows remained in pasture approximately 18 to 20 h a day, because both milking procedures and PMR consumption took between 4 and 6 h per day. Since the growth of the pasture was variable every day, the amount of grass offered daily was measured with an electronic Rising Plate Meter with a diameter of 36 cm and weight of 315 g (FARMWORKS Ltd. ® , Feilding, New Zealand), in accordance with Cárdenas et al [23].…”

Section: Experimental Designmentioning

confidence: 99%

An Evaluation of the Supplementation of Rumen-Protected Lysine and Methionine on the Lactation Performance of Fall Parturition Grazing Holstein Cows in Southern Chile

Melendez,

Möller,

Arevalo

et al. 2023

Animals

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The aim of this study was to evaluate the effect of the supplementation of rumen-protected (RP) methionine and lysine on milk yield, solids, and body weight over time on fall-calving grazing multiparous Holstein cows from Chile. Four treatment groups were studied and compared for the outcomes over time. The treatments were as follows: (i) CON: control (n = 26); (ii) RP lysine group (LYS; 20 g per cow per day; n = 26); (iii) RP methionine group (MET; 20 g per cow per day; n = 26); and (iv) LYS × MET (RP lysine and RP methionine 20 g of each amino acid per cow per day; n = 26). Data were analyzed with general linear mixed model ANOVAs for repeated measures to primarily test the main effects of each amino acid and their interactions. The supplementation of the amino acids was conducted from 2 to 70 days postpartum. Overall, milk production tended to be higher in the MET and in the LYS × MET group when compared to the control group. Furthermore, CON produced significantly less milk protein (kg) and milk fat (kg) than the LYS, MET, and LYS × MET groups. Milk urea tended to be lower during the entire study in the CON group than the rest of the groups. There was a trend for a reduction in the losses of postpartum body weight in the LYS × MET than the CON. In conclusion, RP methionine and lysine improved milk fat and protein yield in grazing multiparous cows with fall parturitions; consequently, both RP amino acids can be used as a strategy for improving grazing cows’ production performance.

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The effect of rumen-protected lysine and methionine on milk yield, milk components, and body weight in grazing Holstein cows during spring calving season in the southern hemisphere

et al. 2023

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CALIBRATION OF THE RISING PLATE METER FOR MIXED PASTURES OF RYEGRASS (Lolium perenne L.) AND KIKUYO (Cenchrus clandestinus)

Cited by 5 publications

References 26 publications

Changes in the milk response to different herbage mass of dairy cattle in a tropical climate

Changes in the milk response to different herbage mass of dairy cattle in a tropical climate

An Evaluation of the Supplementation of Rumen-Protected Lysine and Methionine on the Lactation Performance of Fall Parturition Grazing Holstein Cows in Southern Chile

The effect of rumen-protected lysine and methionine on milk yield, milk components, and body weight in grazing Holstein cows during spring calving season in the southern hemisphere

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